US Bridges

N4560 over Creek

FairPosted for load

Ottawa County, Oklahoma · 4.0MI.N.&1.4W Fairland · Structure no. 069570000000000

Built
1939
86 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
33 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4560 over Creek is a concrete slab carrying N4560 over Creek in Ottawa County, Oklahoma. It was built in 1939, so it is 86 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 33 ft (10.1 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesN4560
CrossesCreek
Location4.0MI.N.&1.4W Fairland
RouteCounty Highway N4560
CountyOttawa County
StateOklahoma
Coordinates36.8085, -94.87354
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating10.8 US tons
Inventory rating6.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span14 ft (4.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$276,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4560 over Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is N4560 over Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does N4560 over Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4560 over Creek?

The structure is 33 ft (10.1 m) long with a longest span of 14 ft (4.3 m) and a deck 28 ft wide.

Who owns N4560 over Creek?

It is owned by the County Highway Agency.